<template>
  <div class="article-container">
    <!-- 导航栏 -->
    <van-nav-bar fixed left-arrow @click-left="$router.back()" title="文章详情"></van-nav-bar>
    <!-- /导航栏 -->

    <!-- 文章详情 -->
    <div class="detail">
      <h3 class="title">{{article.title}}</h3>
      <div class="author">
        <van-image round width="1rem" height="1rem" fit="fill" :src="article.aut_photo" />
        <div class="text">
          <p class="name">{{article.aut_name}}</p>
          <p class="time">{{article.pubdate | fromNow}}</p>
        </div>
        <van-button
          round
          size="small"
          type="info"
          @click="followClick"
        >{{article.is_followed===true?"已关注":"关注"}}</van-button>
      </div>
      <div class="content">
        <div v-html="article.content"></div>
      </div>
      <br />
      <br />
      <div class="zan">
        <van-button round size="small" hairline type="primary" plain
         :icon="article.attitude==1 ?'good-job':'good-job-o'"
         @click="togglePraise">
         {{article.attitude==1?"取消点赞":"点赞"}}
         </van-button>&nbsp;&nbsp;&nbsp;&nbsp;
        <van-button round size="small" hairline type="danger" plain 
        icon="delete"
        @click="toggleDisLike">
        >
          {{article.attitude==0?"取消点赞":"点赞"}}
        </van-button>
      </div>
    </div>
    <!-- /文章详情 -->
  </div>
</template>

<script>
import {
  getArticleInfo,
  followUser,
  unFollowUser,
  addPraise,
  cancelPraise,
} from "./home";

export default {
  name: "articlt",
  data() {
    return {
      article: {}
    };
  },
  methods: {
    async followClick() {
      //判断关注状态
      if (this.article.is_followed === true) {
        //已关注，则取消关注
        let res = await unFollowUser({ target: this.article.aut_id });
        this.$toast.success("取关成功");
        this.article.is_followed = false;
      } else {
        //没有关注，则关注
        let res = await followUser({ target: this.article.aut_id });
        this.$toast.success("关注成功");
        this.article.is_followed = true;
      }
    } /* 点赞 */,
    async togglePraise() {
      // 根据attitude来决定调用哪个方法   1:点赞
      if (this.article.attitude == 1) {
        // 点击时, 要取消点赞
        let res = await cancelPraise(this.article.art_id);
        if (res.status == 204) {
          this.$toast.success("取消点赞成功");
          this.article.attitude = -1;
        } else {
          this.$toast.success("操作失败");
        }
      } else {
        // 点击时, 要进行点赞请求
        let res = await addPraise(this.article.art_id);
        if (res.status == 201) {
          this.$toast.success("点赞成功");
          this.article.attitude = 1;
        } else {
          this.$toast.success("操作失败");
        }
      }
    },
    // 喜欢
    async toggleDisLike() {
      // 根据attitude来决定调用哪个方法   0:喜欢
      if (this.article.attitude == 0) {
        // 点击时, 要取消喜欢
        let res = await cancelPraise(this.article.art_id);
        if (res.status == 204) {
          this.$toast.success("取消喜欢成功");
          this.article.attitude = -1;
        } else {
          this.$toast.success("操作失败");
        }
      } else {
        // 点击时, 要进行点赞请求
        let res = await addPraise(this.article.art_id);
        if (res.status == 201) {
          this.$toast.success("喜欢成功");
          this.article.attitude = 0;
        } else {
          this.$toast.success("操作失败");
        }
      }
    }

  },
  async created() {
    let res = await getArticleInfo({ id: this.$route.query.id });
    this.article = res.data.data;
  }
};
</script>

<style lang="less" scoped>
.article-container {
  position: absolute;
  left: 0;
  top: 0;
  overflow-y: scroll;
  width: 100%;
  height: 100%;
}
.article-loading {
  padding-top: 100px;
  text-align: center;
}
.error {
  padding-top: 100px;
  text-align: center;
}
.detail {
  padding: 50px 10px;
  .title {
    font-size: 16px;
  }
  .zan {
    text-align: center;
  }
  .author {
    padding: 10px 0;
    display: flex;
    .text {
      flex: 1;
      padding-left: 10px;
      line-height: 1.3;
      .name {
        font-size: 14px;
        margin: 0;
      }
      .time {
        margin: 0;
        font-size: 12px;
        color: #999;
      }
    }
  }
  .content {
    font-size: 14px;
    overflow: hidden;
    white-space: pre-wrap;
    word-break: break-all;
    img {
      max-width: 100%;
      background: #f9f9f9;
    }
  }
}
</style>
